Convert XLS to CFG

Fast, free, and secure XLS to CFG conversion. No registration required.

Stop uploading your xls files to random websites. Xonvert converts to cfg right inside your browser — 100% offline. The Excel 97-2003 standard (maintained by Microsoft) provides backward compatibility with Excel 97 and later. Configuration File (Various's format) delivers human-readable settings file with broad application support — making this conversion highly practical. Excel 97-2003 dates back to 1997, while Configuration File arrived in N/A. Xonvert is actively maintained and updated with the latest codec improvements and format support.

Benefits of XLS to CFG Conversion

There are strong reasons to convert XLS to CFG:

Cross-device access: Configuration File files open seamlessly on Windows, macOS, Linux, iOS and Android — unlike Excel 97-2003, which may require specialized software.

Embedding support: Configuration File files embed cleanly in websites, documents, and presentations without requiring additional plugins or viewers.

Feature support: Configuration File supports human-readable settings file with broad application support, which may not be available or optimal in the Excel 97-2003 format.

Metadata handling: Configuration File has robust metadata support, allowing you to embed titles, tags, and descriptions that travel with the file.

Industry standard: In many data workflows, Configuration File has become the go-to format, making this conversion a frequent necessity.

Format Breakdown: XLS vs CFG

FeatureXLSCFG
Full NameExcel 97-2003Configuration File
CategoryDocumentData
CompressionLosslessLossless
Key Strengthbackward compatibility with Excel 97 and laterhuman-readable settings file with broad application support
Key Weaknesslimited to 65,536 rows and 256 columns, macro virus riskno standard format specification
Primary Uselegacy spreadsheets and backward-compatible data exchangeapplication settings
DeveloperMicrosoftVarious
Year Released1997N/A

How XLS to CFG Conversion Works

Converting XLS to CFG with Xonvert is straightforward:

1. Access the tool — Open this XLS to CFG page on any device — desktop, laptop, tablet, or smartphone.
2. Add your content — Select your XLS file through the file picker or drag it from your file manager.
3. Convert privately — The conversion runs locally in your browser. No files are sent to any server at any point.
4. Get the output — Download your CFG file immediately. For batch conversions, everything exports as a single ZIP.

Fidelity When Converting XLS to CFG

The Excel 97-2003 source uses lossless encoding. The Configuration File output uses lossless encoding. Since both share the same compression philosophy, quality transfer is highly efficient. Xonvert's conversion engine analyzes your Excel 97-2003 source and selects the optimal encoding strategy for Configuration File output. Supports VBA macros (potential security risk) Usually plain text key-value pairs These implementation details are handled automatically by the converter. A/B testing confirms that Xonvert's Excel 97-2003 to Configuration File output is indistinguishable from reference-quality conversions produced by leading desktop software. The WebAssembly engine uses identical codec libraries.

Extracting structured data from Excel 97-2003 documents to Configuration File data format involves parsing the document content and organizing it into a structured representation. Tabular data, lists, and key-value pairs are identified and converted. This is useful for data migration, analysis, and programmatic processing of document content.

The XLS to CFG conversion applies format-appropriate algorithms to ensure maximum data fidelity. Maximum of 65,536 rows × 256 columns per worksheet

Typical Conversion Scenarios

Common scenarios for XLS to CFG conversion:

Accessibility compliance — Certain accessibility standards require specific formats. Converting to CFG can help meet WCAG or ADA requirements.
Presentation use — CFG files integrate easily into PowerPoint, Google Slides and Keynote presentations.
Personal organization — Standardize your file collection by converting all XLS files to CFG, making everything consistent and easy to manage.
Batch processing — Convert entire folders of XLS files to CFG using Xonvert's batch mode.
App development — Mobile and web apps may require CFG assets. Convert your XLS source files during the build process.
Archiving content — Convert XLS files to CFG for long-term, standardized storage.

Everything About XLS to CFG Conversion

Does this tool support drag and drop?
Absolutely. Drag files directly from your file manager onto the converter area. You can also click to browse, or paste from clipboard.
Can I adjust conversion quality settings?
Yes. The settings panel lets you control output quality, resolution and format-specific parameters. Default settings are optimized for best results.
What's the best quality setting for XLS to CFG?
CFG is lossless, so quality settings primarily affect encoding speed rather than output fidelity. The default works perfectly.
Can I convert XLS to CFG on Linux?
Yes. Xonvert works in any modern browser on any operating system — Linux, Windows, macOS, ChromeOS, and mobile platforms all supported.
What is CFG format?
Configuration File is Configuration file format used by many applications and games. It is primarily used for application settings, game configuration and system preferences. Common for game engines (Source, Quake, Unreal)
Is Xonvert open source?
Xonvert uses open-source conversion libraries (FFmpeg, libvips, etc.) compiled to WebAssembly. The conversion engine is transparent and trustworthy.
Can I use Xonvert offline?
Yes! Once the converter page has loaded, it works without an internet connection. All conversion logic runs locally in your browser.

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